D'Addario brings you Boveda's patented technology as part of our instrument care line.

The Two-Way Humidification System (formerly Humidipak) is the only maintenance free, two-way humidity control system for guitar. It automatically maintains the optimal 45-50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier.

Unlike refillable humidifiers, this system provides true “two-way” purified humidity control by adding and removing moisture on demand. No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors.

The Two-Way Humidification System comes with 3 Humidipaks and a soft mesh pouch that will not harm your instrument's finish.

Features

The first two-way humidity control that maintains a constant 45%-50% relative humidity level within your instruments case

Protects your instrument against warping, cracks and other damage cause by lack of humidification

No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors Unlike refillable humidifiers